CN2888158Y - Cable core for push-pull soft shaft - Google Patents

Abstract

The utility model discloses a cable core used for push and pull flexible shaft, the cross-sectional shape of cable core is still round, the inner core layer has a plurality of galvanized wire ropes, the coating layer is nylon layer or added a layer of flat wires and a plurality of protruded strips are arranged on periphery coating layer. The structural design of the cable core broke the traditional concept of smooth round coating layer. After the cable core fixed to flexible shaft, the contact area of cable core and internal surface of armor tubing is very small, so the frictional resistance is also small, thus the higher load efficiency can be obtained, meanwhile the clearance between surface of such coating layer and armor tubing is smaller, and the higher journey efficiency can be obtained.

Description

A kind of cable core that is used for the push-and-pull flexible axle

Technical field

The utility model relates to the component of the change control system of motor vehicle, more specifically refers to a kind of cable core that is used for the push-and-pull flexible axle.

Background technique

The push-and-pull flexible axle is mainly used in transmission power and displacement, and it is widely used in change control system, engineering machinery and the farm machinery of vehicle.The general structure of push-and-pull flexible axle 10 is asked for an interview shown in Figure 1, and cable core 11 is directly riveted with master, Partner pull bar 12,13.When applying a power to drive end pull bar 12, cable core 11 just moves back and forth in pillar 14, and drives the displacement of 13 generations of Partner pull bar and externally work done.Because the friction of cable core 11 and pillar 14, so the ouput force of Partner pull bar 13 is always less than the input power of drive end pull bar 12, and we are called load efficiency the ratio of ouput force and input power.Owing between cable core 11 and the pillar 14 certain clearance is arranged, always less than the input displacement of drive end pull bar 12, the output displacement is called travel efficiency with the ratio of input displacement again in the output displacement of Partner pull bar 13 again.A good push-and-pull flexible axle is exactly to obtain high as far as possible load efficiency and travel efficiency.

Cable core 11 structures of traditional push-and-pull flexible axle have following two kinds of structures, and a kind of is to adopt wire rope 111 outsourcing flat filament layers 112, and the outsourcing nylon 11 is 3 layers again, as Fig. 2, shown in Figure 3.Another kind is wire rope 111 outsourcing nylon layers 113, as Fig. 4, shown in Figure 5.

Because the profile of the cable core 11 that above-mentioned two kinds of traditional nylon coat is smooth circular surface, (see figure 1) when it moves back and forth in pillar 14, because cable core 11 is big with the area of contact of pillar 14 internal surfaces, so surface friction drag is just big, and the load efficiency that obtains is just low.Sometimes for reducing the friction of cable core 11 and pillar 14, have to strengthen the gap of cable core 11 and pillar 14, travel efficiency will become very low like this.Therefore the circular outsourcing nylon cable core of this quasi-tradition is difficult to improve simultaneously the load efficiency and the travel efficiency of push-and-pull flexible axle, is necessary to improve.

Summary of the invention

The purpose of this utility model is the above-mentioned shortcoming at the cable core existence of traditional push-and-pull flexible axle, a kind of cable core that is used for the push-and-pull flexible axle is provided, after this cable core is used for the push-and-pull flexible axle of change control system, can make the pillar area of contact of cable core and pushing flexible axle little, surface friction drag is little.

To achieve these goals, the utility model adopts following technological scheme:

This sectional shape that is used for the cable core of push-and-pull flexible axle is a circle, comprises inner sandwich layer and clad, and inner sandwich layer is the Galvanized Steel Wire Rope of several Split Down, and clad is a nylon layer,

The periphery of described clad is laid with several boss stripes.

Described cable core also comprises outsourcing flat filament layer, and the outsourcing flat filament is placed between Galvanized Steel Wire Rope and the clad, and the periphery of described clad is laid with several boss stripes.

Several boss stripes that the periphery of described clad is laid are evenly spaced apart.

Several boss stripes that the periphery of described clad is laid are unevenly spaced distribution.

In technique scheme of the present utility model, the sectional shape of cable core still is a circle, and inner sandwich layer is the Galvanized Steel Wire Rope of several Split Down, and clad is nylon layer or also has an outsourcing flat filament layer between the two, is laid with several boss stripes at the periphery of clad.The structural design of this cable core has broken through the smooth circular notion of conventional bag coating.After being installed on this cable core in the flexible axle, the internal surface area of contact of cable core and pillar is little, so surface friction drag is also less, therefore can obtain higher load efficiency; Simultaneously, such cover surface allows with the gap of pillar littler, so can obtain higher travel efficiency again.

Description of drawings

Fig. 1 is a push-and-pull flexible axle structural representation.

Fig. 2 is one of the cable core structure of a traditional push-and-pull flexible axle schematic representation.

Fig. 3 is the cross section structure enlarged diagram of Fig. 2.

Fig. 4 is two schematic representation of the cable core structure of traditional push-and-pull flexible axle.

Fig. 5 is the cross section structure enlarged diagram of Fig. 4.

Fig. 6 is an example structure schematic representation of push-and-pull flexible axle cable core of the present utility model.

Fig. 7 is the cross section structure enlarged diagram of Fig. 6.

Fig. 8 is another example structure schematic representation of push-and-pull flexible axle cable core of the present utility model.

Fig. 9 is the cross section structure enlarged diagram of Fig. 8.

Embodiment

In order to understand technique scheme of the present utility model better, describe in detail further below in conjunction with drawings and Examples.

Embodiment 1

See also Fig. 6, shown in Figure 7, in this embodiment, the radial cross section that is used for the cable core 20 of push-and-pull flexible axle is shaped as a circle, cable core 20 comprises inner sandwich layer 21 and clad 22, inner sandwich layer 21 is the Galvanized Steel Wire Rope of several Split Down, clad 22 is a nylon layer, and the periphery of described clad 22 is laid with several boss stripes 221.Several boss stripes 221 are evenly spaced apart, and boss stripe 221 also can be unevenly spaced distribution certainly.

Embodiment 2

See also Fig. 8, shown in Figure 9,

In this embodiment, the radial cross section shape that is used for the cable core 20 of push-and-pull flexible axle still is a circle, and cable core 20 comprises inner sandwich layer 21 and clad 22, and inner sandwich layer 21 is the Galvanized Steel Wire Rope of several Split Down, and clad 22 is a nylon layer.In addition, cable core 20 also comprises outsourcing flat filament layer 23, and outsourcing flat filament layer 23 places between inner sandwich layer 21 and the clad 22, that is to say between Galvanized Steel Wire Rope and nylon layer.

Equally, the periphery of described clad 22 is laid with several boss stripes 221, and several boss stripes 221 are evenly spaced apart, and boss stripe 221 also can be unevenly spaced distribution certainly.

All boss stripes 221 shown in the above embodiment are all along the axial direction of cable core.

From the above-mentioned described cable core structure of two embodiments as can be seen, owing to the periphery at clad 22 is laid with several axial direction boss stripes along cable core.After being installed on this cable core 20 in the flexible axle, the surface of cable core 20 is compared with traditional cable core with the internal surface area of contact of pillar and is diminished, so the surface friction drag of cable core 20 and the internal surface of pillar also becomes less, therefore can obtain higher load efficiency; Simultaneously, such clad 22 surfaces allow with the gap of pillar littler, so can obtain higher travel efficiency again.

Through evidence, to compare with traditional smooth circular surface that is, the flexible axle load efficiency and the travel efficiency that adopt cable core of the present utility model to make have all obtained improving significantly.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model the above embodiment's variation, modification.

Claims (4)

1, a kind of cable core that is used for the push-and-pull flexible axle, the sectional shape of this cable core is a circle, comprises inner sandwich layer and clad, and inner sandwich layer is the Galvanized Steel Wire Rope of several Split Down, and clad is a nylon layer,

It is characterized in that:

The periphery of described clad is laid with several boss stripes.

2, the cable core that is used for the push-and-pull flexible axle as claimed in claim 1,

It is characterized in that:

Described cable core also comprises outsourcing flat filament layer, and the outsourcing flat filament is placed between Galvanized Steel Wire Rope and the clad, and the periphery of described clad is laid with several boss stripes.

3, the cable core that is used for the push-and-pull flexible axle as claimed in claim 1 or 2,

It is characterized in that:

Several boss stripes that the periphery of described clad is laid are evenly spaced apart.

4, the cable core that is used for the push-and-pull flexible axle as claimed in claim 1 or 2,

It is characterized in that:

Several boss stripes that the periphery of described clad is laid are unevenly spaced distribution.

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